Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
this is surely because
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this is surely because" is correct and usable in written English.
It can be used to suggest a reason or explanation for something that is being discussed or observed. Example: "The project was delayed; this is surely because of the unexpected technical difficulties we encountered."
✓ Grammatically correct
News & Media
Science
Wiki
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
4 human-written examples
This is surely because skepticism is the ally of inquiry.
News & Media
This is surely because, in some strange and atavistic manner, we want a heart to be a heart.... View Article Adam Gopnik, a staff writer, has been contributing to The New Yorker since 1986.
News & Media
Howard looked like a bad fit for Los Angeles for much of the year, although some of this is surely because he was still recovering from back surgery, and now the world-beaters-on-paper Lakers are fighting just to make the playoffs.
News & Media
I have the feeling your European readers are usually aware of the magic of your stories but fail to see the reality behind it...."... "This is surely because their rationalism prevents them seeing that reality isn't limited to the price of tomatoes and eggs".
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
This was surely because no money was taken.
News & Media
When the CIA's spy satellites missed India's nuclear test, this was surely because the satellites were run by generals interested in tanks.The chief spook and his enemies"Reforming" America's intelligence services is not simply a matter of getting better people and giving them more money and a slightly freer hand.
News & Media
In part, that is surely because there is more dirt to dish: the loser lost, after all, suggesting that things did not run that well in his camp.
News & Media
Part of that is surely because Toussi has been closing about 6 p.m., several hours earlier than usual, to avoid the swarms of revelers.
News & Media
In part, that is surely because Russians truly see Chechnya's rebels, with a long list of kidnappings and grisly executions to their credit, as entirely deserving of extermination.
News & Media
Oddly, the Italians don't have a "coffee thing," but that is surely because no native-born Italian ever experienced anything other than excellent coffee.
News & Media
This is surely relevant because the FN is probably the best example of the right-wing extremism which, from the 1980s onwards, has developed a strong activism and noteworthy electoral gains.
News & Media
Expert writing Tips
Best practice
Use "this is surely because" to introduce a well-supported reason or explanation, ensuring that the connection between the statement and the reason is clear and logical.
Common error
Avoid using "this is surely because" when the reason is speculative or lacks concrete evidence. Overusing it can weaken your argument and make your writing seem less credible.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this is surely because" serves as a causal connector, linking a preceding statement with its likely reason. It introduces an explanation with a degree of confidence. Ludwig confirms its correct usage in various contexts.
Frequent in
News & Media
60%
Science
20%
Wiki
20%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "this is surely because" is a grammatically correct causal connector used to introduce a likely reason or explanation. While considered rare in overall frequency, it appears in News & Media, Science, and Wiki contexts. Ludwig AI affirms its correct usage, emphasizing its function in providing clarity and justification. To enhance writing, ensure the stated reason is well-supported and avoid overuse in speculative contexts. Alternatives like "this is likely because" and "this is undoubtedly because" offer varying degrees of certainty.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
this is undoubtedly because
Emphasizes the lack of doubt regarding the reason.
this is definitely because
Conveys a strong sense of certainty about the reason.
this must be because
Suggests a logical deduction or inference.
this is likely because
Indicates a high probability of the reason being true.
the reason for this is surely that
Rephrases to highlight the reason more explicitly.
this is assuredly because
Adds a formal tone with similar certainty.
it is certainly because
Shifts the emphasis to 'certainly' while keeping the causal link.
hence, this is
A more concise and formal way to express the causal relationship.
consequently, this is
Implies that the statement is a direct result or effect.
this can be attributed to
More formally attributes the situation to a cause.
FAQs
How can I use "this is surely because" in a sentence?
Use "this is surely because" to introduce a likely or obvious reason for a statement. For instance, "The project was delayed; this is surely because of the unexpected technical difficulties we encountered."
What can I say instead of "this is surely because"?
You can use alternatives like "this is likely because", "this is undoubtedly because", or "this must be because" depending on the context.
Is it okay to start a sentence with "this is surely because"?
Yes, it's grammatically correct to start a sentence with "this is surely because", especially when you want to directly state the reason for a preceding situation or statement.
What's the difference between "this is surely because" and "this is probably because"?
"This is surely because" suggests a higher level of confidence in the reason being provided, whereas "this is probably because" indicates a degree of uncertainty or possibility.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested